// ASM: a very small and fast Java bytecode manipulation framework
// Copyright (c) 2000-2011 INRIA, France Telecom
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
// 1. Redistributions of source code must retain the above copyright
//    notice, this list of conditions and the following disclaimer.
// 2. Redistributions in binary form must reproduce the above copyright
//    notice, this list of conditions and the following disclaimer in the
//    documentation and/or other materials provided with the distribution.
// 3. Neither the name of the copyright holders nor the names of its
//    contributors may be used to endorse or promote products derived from
//    this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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package org.objectweb.asm.tree;

import java.util.Map;
import org.objectweb.asm.MethodVisitor;

/**
 * A node that represents a line number declaration. These nodes are pseudo instruction nodes in order to be inserted in an instruction list.
 *
 * @author Eric Bruneton
 */
public class LineNumberNode extends AbstractInsnNode {

	/** A line number. This number refers to the source file from which the class was compiled. */
	public int line;

	/** The first instruction corresponding to this line number. */
	public LabelNode start;

	/**
	 * Constructs a new {@link LineNumberNode}.
	 *
	 * @param line
	 *          a line number. This number refers to the source file from which the class was compiled.
	 * @param start
	 *          the first instruction corresponding to this line number.
	 */
	public LineNumberNode(final int line, final LabelNode start) {
		super(-1);
		this.line = line;
		this.start = start;
	}

	@Override
	public int getType() {
		return LINE;
	}

	@Override
	public void accept(final MethodVisitor methodVisitor) {
		methodVisitor.visitLineNumber(line, start.getLabel());
	}

	@Override
	public AbstractInsnNode clone(final Map<LabelNode, LabelNode> clonedLabels) {
		return new LineNumberNode(line, clone(start, clonedLabels));
	}
}
